<template>
  <div class="app-container">

    <!--查询表单-->
    <el-card class="operate-container" shadow="never">
      <el-form :inline="true" class="demo-form-inline">
        <el-form-item label="名称">
          <el-input v-model="name" placeholder="讲师名" />
        </el-form-item>

        <el-form-item label="头衔">
          <el-select v-model="level" clearable placeholder="头衔">
            <el-option value="1" label="高级讲师" />
            <el-option value="0" label="首席讲师" />
          </el-select>
        </el-form-item>

        <el-form-item label="入驻时间">
          <el-date-picker v-model="joinDateBegin" placeholder="开始时间" value-format="yyyy-MM-dd" />
        </el-form-item>
        <el-form-item label="-">
          <el-date-picker v-model="joinDateEnd" placeholder="结束时间" value-format="yyyy-MM-dd" />
        </el-form-item>

        <el-button type="primary" icon="el-icon-search" @click="getTeacher()">查询</el-button>
        <el-button type="default" @click="resetData()">清空</el-button>
      </el-form>
    </el-card>

    <!-- 工具按钮 -->
    <el-card class="operate-container" shadow="never">
      <i class="el-icon-tickets" style="margin-top: 5px"></i>
      <span style="margin-top: 5px">数据列表</span>
      <el-button class="btn-add" @click="add()" style="margin-left: 10px;">添加</el-button>
      <el-button class="btn-add" @click="batchRemove()">批量删除</el-button>
    </el-card>

    <!-- 表格 -->
    <el-table :data="list" border stripe @selection-change="handleSelectionChange">
      <el-table-column type="selection" />
      <el-table-column label="#" width="50">
        <template slot-scope="scope">
          {{ (currentPage - 1) * pageSize + scope.$index + 1 }}
        </template>
      </el-table-column>
      <el-table-column prop="name" label="名称" width="80" />
      <el-table-column label="头衔" width="90">
        <template slot-scope="scope">
          <el-tag v-if="scope.row.level === 1" type="success" size="mini">高级讲师</el-tag>
          <el-tag v-if="scope.row.level === 0" size="mini">首席讲师</el-tag>
        </template>
      </el-table-column>
      <el-table-column prop="intro" label="简介" />
      <el-table-column prop="sort" label="排序" width="60" />
      <el-table-column prop="joinDate" label="入驻时间" width="160" />
      <el-table-column label="操作" width="200" align="center">
        <template slot-scope="scope">
          <el-button type="text" size="mini" @click="removeById(scope.row.id)">删除</el-button>
          <router-link :to="'/vod/teacher/edit/' + scope.row.id">
            <el-button type="text" size="mini">修改</el-button>
          </router-link>
        </template>
      </el-table-column>
    </el-table>
    <!-- 分页组件 -->
    <el-pagination :current-page="currentPage" :total="total" :page-size="pageSize"
      :page-sizes="[5, 10, 20, 30, 40, 50, 100]" style="padding: 30px 0; text-align: center;"
      layout="total, sizes, prev, pager, next, jumper" @size-change="changePageSize"
      @current-change="changeCurrentPage" />


  </div>
</template>

<script>
import teacherApi from '@/api/vod/teacher'
export default {
  data() {
    return {
      list: [], // 讲师列表
      total: 0, // 总记录数
      currentPage: 1, // 页码
      pageSize: 5, // 每页记录数
      name: '',
      level: '',
      joinDateBegin: '',
      joinDateEnd: '',// 查询条件
      multipleSelection: []// 批量删除选中的记录列表
    }
  },

  // 页面渲染成功后获取数据
  created() {

  },
  methods: {
    // 批量刪除
    batchRemove() {
      if (this.multipleSelection.length === 0) {
        this.$message.warning('请选择要删除的记录！')
        returns
      }
      this.$confirm('此操作将永久删除该记录, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(()=>{
        // 点击确定，远程调用ajax
        // 遍历selection，将id取出放入id列表
        let ids = []
        this.multipleSelection.forEach(item=>{
          ids.push(item.id)
        })
        // 調用api
        teacherApi.batchRemove(ids)
      }).then(res=>{
        this.getTeacher()
        if(res.code === 20000){
          this.$message.success("刪除成功")
        }else {
          this.$message.error("網絡故障，請稍後重試！")
        }
      }).catch(err=>{
        //debugger
        if (err === 'cancel') {
          
          this.$message.info('取消删除')
        }
      })
    },

    // 添加按鈕綁定方法
    add() {
      this.$router.push({
        path: '/vod/teacher/create'
      })
    },

    // 删除
    removeById(id) {
      this.$confirm('此操作将永久删除该记录, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        return teacherApi.removeById(id)
      }).then((res) => {
        this.getTeacher()
        this.$message.success(res.message)
      })
    },

    // 清空搜索表单
    resetData() {
      this.name = '',
        this.level = '',
        this.joinDateBegin = '',
        this.joinDateEnd = ''
    },

    // 自定义每页显示条数
    changePageSize(pageSize) {
      this.pageSize = pageSize;
      this.getTeacher();
    },

    // 更改页码
    changeCurrentPage(currentPage) {
      this.currentPage = currentPage;
      this.getTeacher()
    },

    // 分页条件查询数据
    getTeacher() {
      let paras = {
        currentPage: this.currentPage,
        pageSize: this.pageSize,
        name: this.name,
        level: this.level,
        joinDateBegin: this.joinDateBegin,
        joinDateEnd: this.joinDateEnd
      };
      teacherApi.pageList(paras).then(res => {
        this.list = res.data.records
        this.total = res.data.total
      })
    },

    // 当多选选项发生变化的时候调用
    handleSelectionChange(selection) {
      this.multipleSelection = selection
    }
  },
  mounted() {
    this.getTeacher()
  }

}
</script>

<style scoped>
</style>
